100% New Fuel Injector for Honda BF40/BF50 4-Stroke Outboard Engines – Replaces 16450-ZZ5-003
100% New Fuel Injector for Honda BF40/BF50 4-Stroke Outboard Engines – Replaces 16450-ZZ5-003 is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
100% New Fuel Injector for Honda BF40/BF50 4-Stroke Outboard Engine...
100% New Fuel Injector for Honda BF40/BF50 4-Stroke Outboard Engines – Replaces 16450-ZZ5-003 is backordered and will ship as soon as it is back in stock.
Product Details
This 100% new aftermarket fuel injector is designed for Honda Marine 4-stroke 40 HP and 50 HP BF40 and BF50 outboard engines. It is sold as one individual injector and is intended to replace the corresponding original injector identified by Honda part number 16450-ZZ5-003.
- 100% new fuel injector; not a used or remanufactured component.
- Single injector supplied per order.
- For Honda 4-stroke BF40 and BF50 outboard engine applications.
- Aftermarket replacement for the listed Honda reference number.
Part Number Information
Use the reference number below to compare with the injector currently installed on your engine before ordering.
| Reference Type | Part Number |
|---|---|
| Honda reference number | 16450-ZZ5-003 |
Engine Compatibility
This injector is listed for Honda 4-stroke 40 HP and 50 HP BF40 and BF50 outboard engines. Catalog references include BF40D, BF40DK2, BF40DK4, BF50D, BF50DK2, and BF50DK4 applications. Engine model, variant, and original part number should be checked together before purchase.
| Brand | Engine Family | Rated HP | Stroke | Reference Part No. | Application Notes |
|---|---|---|---|---|---|
| Honda Marine | BF40 / BF40D / BF40DK2 / BF40DK4 | 40 HP | 4-Stroke | 16450-ZZ5-003 | Confirm the exact engine variant and original injector number. |
| Honda Marine | BF50 / BF50D / BF50DK2 / BF50DK4 | 50 HP | 4-Stroke | 16450-ZZ5-003 | Confirm the exact engine variant and original injector number. |
Technical Specifications
- Product Type
- Fuel injector
- Condition
- 100% new aftermarket part
- Application
- Honda Marine 4-stroke BF40 and BF50 outboard engines
- Rated Engine Range
- 40–50 HP
- Fuel
- Gasoline
- Reference Part Number
- 16450-ZZ5-003
- Quantity
- One injector
What’s in the Box
- 1 x 100% new fuel injector
Installation Notes
- Have the installation performed by a qualified marine technician if you are not familiar with fuel-system service.
- Disconnect the battery and relieve fuel-system pressure before removing the original injector.
- Keep dirt and debris away from the fuel rail, injector openings, and fuel connections.
- Inspect seals and O-rings and replace damaged sealing components as necessary.
- Install the replacement injector securely and reconnect all fuel and electrical connections.
- Follow the engine manufacturer’s service-manual procedures and torque specifications.
- Prime the fuel system and check carefully for leaks before starting the engine.
Troubleshooting & FAQ
Is this injector new or used?
This listing is for one 100% new aftermarket fuel injector. It is not a used or remanufactured injector.
Is this sold individually or as a set?
This listing is for one individual injector. If more than one injector is required, confirm the quantity needed for your engine before ordering.
Which engines does this injector fit?
It is listed for Honda 4-stroke BF40 and BF50 outboard engines, including BF40D, BF40DK2, BF40DK4, BF50D, BF50DK2, and BF50DK4 applications. Verify the exact engine variant and original part number before purchase.
Will this fit a Honda BF40A?
Do not rely on horsepower alone. Check the exact engine model, variant, and original injector number against 16450-ZZ5-003 before ordering.
Is this an OEM Honda part?
No. This is a 100% new aftermarket replacement for the Honda reference number shown in this listing. Honda is referenced only to identify the intended engine application and part-number comparison.
What symptoms can indicate a faulty injector?
Possible symptoms include hard starting, rough idle, misfire, poor acceleration, or reduced engine performance. These symptoms can have other causes, so the fuel system should be properly diagnosed before replacing the injector.
Safety & Important Information
- Verify the engine model, variant, and original injector reference number before purchase.
- Do not install the part if its connector, seals, or physical configuration does not match the original component.
- Fuel-system work presents a fire and environmental hazard. Work in a well-ventilated area away from ignition sources.
- Improper installation may cause fuel leaks, poor engine operation, or engine damage.
- This is an aftermarket replacement part and is not manufactured by Honda.
About Sea Sierra
- Marine Replacement Parts — We provide replacement components for a range of outboard-engine service applications.
- Application-Focused Listings — Compare the engine model and reference number before ordering to help select the correct part.
- Customer Support — Contact our support team with your engine details if you need help comparing the listed application.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
